Home / 872-2,070

Finding the Third Proportional to 872 and 2,070

Calculator

Solution

The third proportional to 872 and 2,070 is: 4,913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    872 : 2,070 = 2,070 : x
  2. Step 2: Convert to fraction form
    872/2,070 = 2,070/x
  3. Step 3: Cross multiply
    872x = 2,070 × 2,070
  4. Step 4: Simplify right side
    872x = 4,284,900
  5. Step 5: Solve for x
    x = 4,284,900/872
  6. Step 6: Final answer
    x = 4,913.88

Related Problems

Find third proportional to 436 and 1,035
Half scale
Find third proportional to 1,744 and 4,140
Double scale
Find third proportional to 874 and 2,075
Similar ratio
Find third proportional to 1,308 and 3,105
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.